It shall be unlawful for any person engaged in providing towing service to make repairs for consideration on any vehicle removed by a towing vehicle without first entering into a signed agreement with the owner of the vehicle or his authorized representative, which agreement shall include an estimate of the cost of repairs. 1 copy of this agreement shall be given to the owner of the vehicle or to his authorized representative. 1 copy of this agreement shall be retained as a record for 2 years by the licensed person who owns or leases from another person the towing vehicle used in towing or removing the vehicle. City Code, 1976/83, art. 15, §137(c) Ord. 89-273